In the second Back to the Future flick, Stephen Spielberg envisioned a future with flying cars, one that according to the date on the DeLorean's dashboard is just three years away. That gives GM and company several months to get on the ball, but in the meantime, there are still trains, planes, and land-based automobiles to get from point A to point B. Getting with the times not a moment too soon, Amtrak announced it's now accepting eTickets on all of its trains. Welcome to the Internet era, Amtrak.